Some of Our Sources

Tomb of a man doomed to spend an eternity with frogs eating his face

Has this made it into a Hellboy comic yet? The effigy of Francois I de la Sarra (died 1363), can be found in the Chapel of Sainte-Antoine at La Sarraz, Vaud, Switzerland:

The chapel, dedicated to Saint Antoine, founded by Francis I of La Sarraz, was built by his son Aymon III between 1360 and 1372 as the first urban chapel. It is classified as a historical monument. It is a Protestant temple located on the territory of the Vaud municipality of La Sarraz.